ColorGrabber

Easy to use online tool to find dominant colors in images. Just upload your images, click thumbnails to switch between files and use controls to change the area of interest and the number of colors.

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Key Features

This service utilizes k-means algorithm to cluster the pixels in groups based on their color and then to find the dominant colors located in the center of the groups.

So far it is the only online tool that allows to select an area of interest in addition to processing a whole image. And the only color extraction service allowing multiple uploads. Moreover, the interface is compatible with mobile devices.

Also under the hood, the most recent extensions of k-means algorithm, to overcome its limitations and drastically improve both performance and precision.